Drill.



G. H. OSLUND.

DRILL'. PrLIoATIoN FILED mxo. 4, 190s.

Patnned July 5, 1910.

the clutch operating means can be used inprovided with a spring 26 fornormally 80 SATESA 'CHARLES H. QSLUND, 0F WORCESTER, MASSACHUSETTS.

DRILL. 963,317. Specification of Letters Patent. Patented July 5, 1910,

' Application ined December 4, 190s. serial No. 465,969.

To all 'whom it may concern.' ing the tool 18. In view of this construc-Be it known that I, CHARLES H. ,OsLUND, tion it will be seen that whenthe shaft 12 a citizen of the United States, residing at -is rotated themember 17 and its tool will be orcester, in the county of Worcester androtated also. On the -sleeve 15 is fixed a State of Massachusetts, haveinvented a new gear 20 meshing with a second gear 21. 60 andusefulDrill, of which the following is This gear is adapted to rotate a thirdgear a specification. 22 which meshes with a fourth gear 23. Thisinvention relates to drills. |The gears 21 and 22 are inclosed 1n a cyheprincipal objects thereof are to prolindrical chamber in the casingparallel and vide a construction in which the driviner communicatingwith said passage. The 65 and feedingmechanism for the drill will begear 23 is mounted on a shaft 24 having a conveniently and compactlylocated in a screw thereon so as to rotate the latter, and small, strongcasing; to provide simple and this screw which is preferably left-handedconvenient means therein whereby power engages left-handed screw-threadslocated can be transmitted4 to the drill either by on the cylindricalmember 17. It will be 7o hand or machinery; to rovide means seen thatwhen the parts are connected up as whereby the drill can be fesautomatically indicated the rotation of the shaft 12 not or by handindependently of its rotation and only rotates the member 17 and thedrill 18, the change can be ina-de in a very simple but through thegears 20, 21, 22 and 23 and and convenient manner; to provide a clutchscrew 24 these parts are fed longitudinally. 75 operating means fordisconnecting the auto- In order to provide means whereby the maticfeeding device from the rotating feeding connections can be thrown outof means capable of manipulation in a very operation the gears 21 and 22are provided simple manner; lto provide means whereby with clutch teeth25, and one of them is dependently of the rotating connections, forforcing the gears and clutch members apart. feeding the drill while itis being rotated In the form shown in the drawing, this by independentmeans so that the drill can spring 26 forces the gear 21 to the right,the be rotated by power and fed by hand withgear 22 in this case beingshown as not movout involving any complicated rearrangeablelongitudinally, but as beingprovided 85 ment of parts. with a hub 27journaled in the casmg. The Further objects and advantages of the gear22 rotates with the shaft 28 being proinvention will ap ear hereinafter.vided with a sliding .key 29. The gear 2l Reference is to e had to theaccompanyfreely rotates on the shaft' 28l but moves loning drawing inwhichgitudinall with it as said shaft has an en- 9'0 Figure 1 is alongitudinal central seclarged en 30, which engages the gear as thetional view of a drill constructed in accordshaft moves to the-left. Theshaft extends ance with this invention, showing a clamp through thehollow hub 27, and is provided therefor in elevatlon. Fig. 2 is asimilar with a post 32 on the outer end thereof. sectional view on anenlarged scale showing On this post is pivoted a cam 33' adapted to 95'gearing; and Fig. 3 is a slmilar View showengage a collar 34 on the endof the hub 27. ing the parts at the extreme left of Fig. 1. By operatinga handle 35 which is fixed to The drill lis shown Vas comprising aninthe cam this cam can` be moved into the posiclosing casing 10 having asleeve 11' extion shown in the drawing, in which case the tendingtherefrom and formin a bearing shaft 28 is caused to be pulled to theleft 10c for a power shaft 12. This s aft can be taking with it the gear21 so that the clutch operated in any of the usual ways by hand teethwill coperate and power will be transor by power and is shown asprovided with mitted. If however, the handle 35 is pulled a bevel gear13 inside of the casing meshdown so that a lug 36 thereon engages in aing with a gear 14 on a sleeve 15 for rotatnotch 37 in the casing, theca m will be 105 ing the latter. The sleeve 15 is journaled renderedinoperatlve and the sprmg 26 w1 ll in a longitudinal cylindrical passagein the force the gears apart. In the latter case 1t casing andisprovided with a sliding key will be obvious that there is no feedingconnection 16 for a hollow cylindrical, motion transmitted to the screw24 from the longitudinally movable member 17 for holdshaft 12 when itrotates. The parts are so 110 d that the lug 36 can' loewithldiiiiivtfgdih the notch 37 and the handle 3 5 rotated on the axisof the shaft 28. This car 22 to rotate independently gautsl dissi-S321,and in this case the drill can be fed :forward or drawn backindependently 0f the rotation of the shaft 12. If 1t is de` Si'red togain speed "or power between the shaft 12 and the member 17 the numberof teeth on the ears 20, 21, 22 and 23 can vary Slightly, `tha is, eachone of these gears can have one tooth more er less than the next one." y

For the purpose of changing. the speed of feed, the screw 24 can beprovided with a sliding ke 40, and with a fifth gear 41 located at t eside of the gear 23, This slid,- ing key is adapted to connect eitherone of these two gears with the screw, and one of them is provided withone more tooth than the other which can be done although both of themmesh constantly with the gear 22` his speed changing device however, canbe omitted. The screw is shown in the present case as provided withball-bearings 42 at the end bearing rigidly against the inside of thecasing and constituting an end-thrust bearing in the casing.

The sleeve 11 which projects from the casin and which is supportedthereby, or

lich the easing can be supported, is employed for the .connection of thecasing with a clamp. For this purpose a bar 45 1s secured to the sleeveby means of a bolt 46 or thelike. This bar is provided with a'screwI-thr'ead `47-on which an adjustable 48 is mounted and adapted tobesecured b a bolt 49 or the like. On the opposite en this bar is turneddown and provided with a screw-thread 50 on which a nut 51 is adjustablmounted. This nut has a pivot 52 for a ever 53 which is provided with acam surface 54 engaging a projecting bearing surface 55 on a slidlng jaw56. 4It will be seen that` when this lever is brought down the camsurface 54 will exert a pow'rfulforce uponeitA to clamp the work betweenthe two jaws. It will be seen also that the jaw 48'can be adjusted bturning it on its screw-threads, and that the nut 51 also ,can beadjusted forward and back. When the lever 53 is lifted to bring it backto ino erative position the sliding ]aw 56 is broug t back with it bymeans of a link 57 thereon havin a slot 58 through which a pin=59 on theever passes.

V The operation of t e invention will be obclamping 4jaw vious vfromwhat has been stated concerns 1n the same.

hile I have illustrated and described a preferred embodiment of theinvention, I am aware that many modifications. may be made there1n byanyperson skilled in the art without departinrrom the scope of theinvention as expresse l in the claims. Therefore I do, not wish to belimited to all the `l features of'construction shown, but

What I do claim isz- 1. In ahlaohine of the character described, thecombination of a rotatable sleeve, means for rotating said sleeve, atool-holding device, means whereby the tool-holding device is rotatedwhen the Sleeve is rotated, a gear rotatable with the sleeve, a secondgear meshing with the first, a shaft, a third gear on Said shaft, meansfor connectin the second gear with the third gear an for die connectn ittherefrom, a fourth gear meshA ing with t 1e third gear, a screw withwhich the fourth gear is connected, means; on the tool-holding devicefor engaging the screw, said fourth gear being loose on the screw, afifth gear on said screw having a different number of teeth than thefourth gear and meshing with the third gear, and a key forconnectingeither the fourth or ifth gearwith the screw.

2. In amachine ofthe character described, the combination of aninclosing casing llav-l ing a bearing at one end, a tool-holding device,means inclosed in the casing for rotating the tool-holding device, amember rotatable with the tool-holdin device, a gear,

` means whereby the tool-hol ing device will be rotated by the gear,clutch members 1nclosed in the casing near said bearing for connectingthe gear with the rotatable meub ber, a cam pivotally mounted on theoutside of the casing at the end of said bearing for forcing the clutchmembers together, and a handle located on the cam for operating the cam,said handle being connected with the. gear in all positions thereofwhereby when the handle is turned to a position to disengage the clutch,the handle can be rotated to rotate theV gear and feed the drill-holdingmember.

In testimony whereof I have hereunto set my hand, in the presence of twosubscribing wltnesses.

CHARLES H. OSLUND. Witnesses:

ALBERT E. FAY, C. Fommsr Wesson.

